One thing we didn’t have to worry about on the boat was getting flooded out of our home. OK, we may have had flooded access to and from it, but the home itself rose with the water levels.
The marina had floodproofing though insomuch as the pontoons also rose with the water, and the gantries were so hinged that the angle changed with the water level. Only once were they completely horizontal, and we never had to go UP them to get to our boat.
The town suffered its worst flood in 2007. That was the year we were househunting in a tent and got flooded out on campsites more times than I care to remember. Having nowhere to call home at the time, we bought a small touring caravan until we finally found a property.